Ann comes from England. She’s English. She speaks English. She can also speak a little Chinese. She’s in Shanghai now. She’s studying(学习) in a middle school of Shanghai. She has classes on weekdays. On Sundays she often plays games with her Chinese friends. Her father is working in a factory near her school. He helps the Chinese workers to make nice watches. Ann and her father like Chinese food. And they like China and the Chinese people very much.

小题1:Which is right(正确的)?

A. Ann speaks little Chinese.　   B. Ann is good at Chinese.

C. Ann can speak some Chinese.

小题2:   Can Ann’s father speak Chinese?

A. We don’t know.　　      B. Yes.　　　　　　　    C. No.

小题3:   Ann has _______ classes on Sundays.

A.some                  B.no                        C.many

小题4:   Ann’s father works in a _______ factory.

A.bike                 B.watch                 C.food

小题5:   Does Ann’s father like China?

A. We don’t know.　　      B. Yes.　　　　　　　    C. No.

样本相关系数的假设检验中，备择假设为（）。

A.β=0

B.r=0

C.r≠0

D.ρ=0

E.ρ≠0